Mariano Zabaleta defeated David Nalbandian 6-7 6-0 6-0 in the Acapulco round of 16 on hard. The result followed the form book — Mariano Zabaleta came in leading the head-to-head 1–0, defending last year's quarter-final. Mariano Zabaleta extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-01-06 | Auckland | R32 | hard | Mariano Zabaleta | 2-6 7-6(3) 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (166 vs 200). ATP, WTA & Challenger.